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7-2 Panel C Industrial Computer Hardware User's Manual – May 2003 GFK-2251
7
Troubleshooting
Powerup
Symptom Possible Causes Solution
Computer does not power up. Power not on (PWR indicator is
not lit or display completely
dark).
Make sure that computer is
plugged in. Make sure that
power source is functioning
properly.
Display is blank (PWR indicator
is lighted).
See “Display” topic in this
Chapter
See “Display” topic in this
Chapter
Non-System disk or disk
error message displayed.
Disk in floppy disk drive. Remove floppy disk and then
reboot or cycle power .
Safe Recovery Error message
displayed.
Occurs on initial power up if the
unit is accidentally turned off
without first shutting down the
Windows software.
The computer will power up
normally.
Memory count during powerup
self-test is incorrect.
Optional DIMM is installed
incorrectly or is incompatible
with the Panel C industrial
computer CPU.
Make sure that the appropriate
memory is installed correctly.
CMOS checksum error —
Defaults loaded
CMOS battery failed
message displayed.
CMOS battery failure. Replace the battery. For more
information, see “CMOS
Checksum Error” topic in this
chapter.
A screen appears just after
powerup, or just after reset,
which has the title “CMOS
Setup Utility.”
The
F2 key has been
accidentally pressed.
Cycle power again. The
computer will power up
normally.
The computer has reset even
though the power was not
interrupted.
The
CTRL-ALT-DEL keys were
pressed twice at the same
time.
This should never be done,
unless you are attempting to
reset the computer.
A:> appears instead of
software.
A system floppy disk is
inserted.
Remove disk and cycle power.
Display
Symptom Possible Causes Solution
Characters are dim. Computer screen is in direct
light.
Change lighting.
Display is blank (PWR indicator
is lit).
Screen temperature is outside
operating range.
If computer is in direct sunlight,
move it and allow it to cool.
Computer is set up for invalid
video mode.
Reboot. Select VGA Mode
Screen saver is active. Touch a key on the keypad.